EP 0997663 B1 20030326 - Vehicular automatic transmission
Title (en)
Vehicular automatic transmission
Title (de)
Fahrzeug-Automatikgetriebe
Title (fr)
Transmission automatique pour véhicule
Publication
Application
Priority
- JP 32598198 A 19981030
- JP 24413699 A 19990830
Abstract (en)
[origin: EP0997663A2] The present invention is intended to reduce the weight and size of a speed-change mechanism by shortening a high-torque transmission system and to attenuate speed-change shock by reducing an inertia torque in a multi-stage vehicular automatic transmission. For this purpose, a vehicular automatic transmission is equipped with a planetary gear set that receives a decelerated rotation and a non-decelerated rotation as inputs and outputs a plurality of speed-change rotations, a reduction planetary gear, an input shaft that passes through an inner side of the planetary gear set, first and third clutches that couple the input shaft to two different speed-change elements of the planetary gear set respectively through the reduction planetary gear in an engageable and disengageable manner, and a second clutch that couples the input shaft to the other speed-change element of the planetary gear set in an engageable and disengageable manner. The reduction planetary gear and the third clutch for transmitting a high torque are arranged on one side of the planetary gear set, whereas the first clutch for transmitting a high torque is arranged on the other side of the planetary gear set. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP US)
F16H 3/663 (2013.01 - EP US); F16H 2200/0052 (2013.01 - EP US); F16H 2200/2007 (2013.01 - EP US); F16H 2200/2023 (2013.01 - EP US); F16H 2200/2046 (2013.01 - EP US); F16H 2200/2097 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0997663 A2 20000503; EP 0997663 A3 20001227; EP 0997663 B1 20030326; DE 69906215 D1 20030430; DE 69906215 T2 20031211; JP 2000199549 A 20000718; JP 4096468 B2 20080604; US 6176802 B1 20010123
DOCDB simple family (application)
EP 99121556 A 19991029; DE 69906215 T 19991029; JP 24413699 A 19990830; US 43018199 A 19991029